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CRM Series Ultrafine Grinding Mill Featured Image

CRM Series Ultrafine Grinding Mill

Short Description:

Application: calcium carbonate crushing processing, gypsum powder processing, power plant desulfurization, non-metallic ore pulverizing, coal powder preparation, etc.

Materials: limestone, calcite, calcium carbonate, barite, talc, gypsum, diabase, quartzite, bentonite, etc.

Capacity: 0.4-10t/h
Finished product fineness: 150-3000 mesh (100-5μm)

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Product Detail

Description

The CRM series mill is used for grinding non-combustible and explosion-proof minerals, the hardness of which on the Mohs scale does not exceed 6, and the moisture content does not exceed 3%. This mill is used to produce ultrafine powdery materials in the medical, chemical industry and can produce a product with a size of 5-47 microns (325-2500 mesh) with a feed size of 15-20 mm.

Ring mills, like pendulum mills, are used as part of plant.

The plant includes: hammer crusher for preliminary crushing, bucket elevator, intermediate hopper, vibrating feeder, HGM mill with built-in classifier, cyclone unit, pulse-type atmospheric filter, exhaust fan, set of gas ducts.

The process is monitored using various sensors that monitor parameters in actual time, which guarantees maximum production efficiency of the equipment. The process is controlled using a control cabinet.

The finished product from the collection of fine powder of the cyclone-precipitator and the impulse filter is sent by a screw conveyor to further technological operations or is packaged in various containers (valve bags, big bags, etc.).

CRM Ring Mill Working Principle

The material of fraction 0-20 mm is fed into the grinding chamber of the mill, which is a roller-ring grinding unit. Direct grinding (grinding) of the material occurs between the rollers in the cage due to squeezing and abrasion of the product.

After grinding, the crushed material enters the upper part of the mill along with the air flow created by a fan or a special aspiration filter. Simultaneously with the movement of the material, it is partially dried. The material is then classified using a separator built into the top of the mill and calibrated according to the required particle size distribution.

The product in the air flow is separated due to the action of oppositely directed forces on the particles - the force of gravity and the lifting force provided by the air flow. The larger particles are more influenced by the force of gravity, under the influence of which the material is returned to the final grinding, the smaller (lighter) fraction is carried away by the air flow into the cyclone-precipitator through the air intake. The fineness of grinding of the finished product is regulated by changing the speed of the classifier impeller by changing the speed of the engine.

Performance advantage

High efficiency and energy saving
Under the condition of the same finished product fineness and motor power, the output is more than double that of jet mill, stirring mill and ball mill.

Long service life of wearing parts
Grinding rollers and grinding rings are forged with special materials, which greatly improves the utilization. Generally, it can last for more than one year. When processing calcium carbonate and calcite, the service life can reach 2-5 years.

High safety and reliability
Because there is no rolling bearing and no screw in the grinding chamber, there is no problem that the bearing and its seals are easily damaged, and there is no problem that the screw is easy to loosen and damage the machine.

Environmentally friendly and clean
The pulse dust collector is used to capture dust, and the muffler is used to reduce noise, which is environmentally friendly and clean.

Technical Specifications

Model	CRM80	CRM100	CRM125
Rotor diameter, mm	800	1000	1250
Rings amount	3	3	4
Number of rollers	21	27	44
Shaft rotation speed, rpm	230-240	180-200	135-155
Feed size, mm	≤10	≤10	≤15
Final product size, micron / mesh	5-47/ 325-2500
Productivity, kg / h	4500-400	5500-500	10000-700
power, kw	55	110	160

Case

User Feedback

Transport Delivery

CORINMAC has professional logistics and transportation partners who have cooperated for more than 10 years, providing door-to-door equipment delivery services.

Transport to customer site

Installation and commissioning

CORINMAC provides on-site installation and commissioning services. We can send professional engineers to your site according to your requirements and train on-site personnel to operate the equipment. We can also provide video installation guidance services.